This lovely reef may be one of the most photographed in the world, but do you know where it's located? Now since you guys have guessed everything so easily in the past, I want to make this harder for you. This time, I not only want to know where it is, but also the name of the country's capital city. Do you know?

Log in and leave your guesses below and check back on Monday for the answer!

UPDATE 2/13/12: Ysaac andLingLing08 both guessed this one right. This heart-shaped wonder is located in the Great Barrier Reef near the Whitsunday Islands off the coast of Queensland. (And the capital of Australia is Canberra!)

Lyndsey Matthews is an assistant digital editor at Travel + Leisure.